Columbus will be on alert Sunday for possible violence or destruction from demonstrators who may march on the Ohio Statehouse in conjunction with other supporters of President Donald Trump from across the country.
The state and city have spent the week preparing for the protests and attempting to send a message of intolerance toward violence.
Here's what you need to know:
When and where is the march planned?
The Washington Post reported far-right online forums talked of planning for "an armed march on all state capitals" and included specific mention of Columbus following the deadly storming of the U.S. Capitol by a pro-Trump mob on Jan. 6.
Reports on the events suggest Columbus' march will start at noon Sunday at the Ohio Statehouse Downtown. Federal authorities have also warned state governments that buildings could be stormed on Wednesday, when Joe Biden is inaugurated.
Updates from around US:Nation on high alert ahead of inauguration protests
What is expected?
It's unknown at this time, and it could be a nonevent. Experts say the online activity from far-right groups is not as significant as it was before the Jan. 6 attack on the Capitol.
But, they cautioned, that doesn’t mean there’s no chance of violence.
Many extremists are not part of organized groups, such as the Proud Boys, with designated leaders. And the example of the Jan. 6 Capitol assault is on everyone's minds.
Signs suggest smaller gatherings:Far-right extremists plan to steer clear of Inauguration Day protests
The FBI warned earlier this week that protests are planned in all 50 states, and experts worry that state capitols could prove softer targets for domestic terrorists, armed paramilitary groups or simply large crowds of angry Trump supporters.
A Capitol-style storming in Ohio "certainly would be our worst fear," Ohio Gov. Mike DeWine said Tuesday. "I think about it a lot ... the images of what we saw on TV is seared in my memory forever and on my mind. ... So, yes, I am concerned about it."
In Columbus, the governor, Columbus Police Chief Thomas Quinlan and State Highway Patrol Superintendent Richard Fambro have declined to discuss intelligence surrounding expected protests or to estimate the number that might gather on Capitol Square.
But, DeWine said of the intelligence, "We have a heightened sense of concern."
'Violence will not be tolerated:' 'Ohio Statehouse to close, National Guard will be stationed Downtown for protests
What preparations have law enforcement made?
Up to hundreds of Ohio National Guard soldiers and airmen are present Downtown to back up large numbers of State Highway Patrol troopers and Columbus police.
DeWine said the goal is a peaceful gathering, but he wants to be prepared.
Ground-floor windows have been boarded up at the Statehouse and mobile lighting has been moved into place to deal with the potential protests.
Columbus Police Chief Thomas Quinlan said peaceful protesters will not be targeted with tear gas or chemical irritant sprays. However, use of chemical weapons is authorized in response to violence and acts that imperil officers and others.
Will I still be able to go Downtown for other things?
There is not a curfew or a block on traffic, but officials are urging Columbus residents to avoid the area.
"Stay home and stay away from the foolishness," Columbus City Council President Shannon G. Hardin said. Mayor Andrew J. Ginther and Quinlan echoed his message.
Message for Sunday:Stay away from Downtown Columbus as city prepares for armed demonstrators
Officials are worried that tensions could escalate if protesters supporting Trump clash with counterprotesters. Groups skirmished at the Statehouse on Jan. 6.
Previous protest:Brawling erupts at Statehouse in Columbus
What has been closed, canceled or moved as a result of the protests?
The Ohio Statehouse and all state buildings Downtown will be closed Sunday through Wednesday. Employees have been advised to work from home.
Buses will avoid the area, with COTA rerouting all lines around Capitol Square beginning at 10 a.m. Sunday, until the protests are over.
Weekend demonstrations to honor Black people killed by police have been paused as well.
Are guns allowed at the Statehouse?
Yes. Protesters are allowed to openly carry guns on the Statehouse grounds in compliance with state law, with federal officials warning many protesters may be armed.
A change in the Ohio Administrative Code in April 2019, to recognize state laws permitting the carrying of concealed guns by permit holders, allows hidden and openly carried weapons outside the Statehouse, although the prior ban seldom was enforced.